Main issue isn't the resolution though - limiting factor is discomfort/fatigue of having this device/screens strapped an inch from your face.
I think it would have to be something like immersive AR glasses on the order of glasses for simple corrective lenses to have the level of comfort necessary to not only want to use it, but use it long enough to actually be seeing a productivity increase.
You'll be fatigue from having a screen on your face within an hr.